Profibus Communication
B.4 Input Data (from Slave to Master)
SITRANS F M TRANSMAG 2
Operating Instructions, 11/2009, A5E00102775-07
95
Table B- 3
Formats of the quality bits
Bit
7
Bit
6
Profile Designation
Meaning
0
0
bad
Useless measured value
0
1
uncertain
Uncertain measured value
1
0
Good (not cascade)
Measured value OK
Table B- 4
Formats of the substatus bits
Bit
5
Bit
4
Bit
3
Bit
2
Profile Designation
Meaning
0
0
0
1
configuration error
Error in parameterization, i.e. upper and lower value
for measuring or output scale identical
0
0
1
0
not connected
Sensor error or sensor not connected
0
0
1
1
device failure
RAM or EEPROM defective;diagnostic bit "Memory
error" is set additionally and diagnostic message
"RAM error"
or "EEPROM error" displayed locally
0
1
1
1
out of service
Corresponding function block is in "Out of service"
mode (see parameter "MODE_BLK actual")
0
0
0
0
non specific
Immersion check:
at least one electrode not immersed
last usable value
Failsafe operation: current measured value replaced
by the last good measured value
0
0
1
0
sunstitute set
Failsafe operation: current measured value replaced
by the agreed failsafe valuet
0
1
0
0
initial value
Failsafe operation or state before first measurement:
actual measured value replaced by start value
0
1
0
0
sensor conversion
not accurate
Measured value is outside the sensor limits
O.K.
Measured value is OK (normal state)
0
0
0
1
update event
A parameter with memory attribute "static" was
changed locally or by PROFIBUS
0
0
1
0
active advisory alarm
Upper warning limit exceeded or lower warning limit
dropped below
0
1
0
0
active critical alarm
Upper alarm limit exceeded or alarm limit dropped
below
Table B- 5
Formats of the limit bits
Bit
1
Bit
0
Profile Designation
Meaning
0
0
O.K.
Measured value within the limit values (normal state)
0
1
low limited
Measured value has dropped below the lower limit (alarm, warning or
sensor limit)